Quick answers
- Which hospitals does Mark I. Ignatius work at?
- Medicare's official clinician data lists Mark I. Ignatius at 4 hospitals: California Pacific Medical Ctr-Davies Campus Hosp, Marinhealth Medical Center, Novato Community Hospital and Sonoma Valley Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark I. Ignatius see patients?
- Medicare's clinician data lists 2 practice locations, including San Francisco, CA. Call before your visit to confirm the address.
- What is Mark I. Ignatius's specialty?
- Medicare lists Physical Medicine and Rehabilitation as the primary specialty, and also Interventional Pain Management.
- Does Mark I. Ignatius accept Medicare assignment?
- Yes. Medicare's clinician data says Mark I. Ignatius accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Mark I. Ignatius?
- (415) 668-8010, as listed in official Medicare / NPI Registry data.
- What is Mark I. Ignatius's NPI number?
- 1073743233. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark I. Ignatius works
Medicare's Facility Affiliation Data lists Mark I. Ignatius at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- California Pacific Medical Ctr-Davies Campus HospSan Francisco, CA · Acute Care Hospital · CCN 050008
- Marinhealth Medical CenterGreenbrae, CA · Acute Care Hospital · CCN 050360
- Novato Community HospitalNovato, CA · Acute Care Hospital · CCN 050131
- Sonoma Valley HospitalSonoma, CA · Acute Care Hospital · CCN 050090
Practice locations
Addresses where Mark I. Ignatius is enrolled with Medicare (CMS data updated 2026-10-02).
- 3838 California St, Rm 516San Francisco, CA 94118 (415) 668‑8010
- 505 Parnassus AveSan Francisco, CA 94143 (415) 476‑1000
Group practices
Medicare enrollment lists Mark I. Ignatius as a member of these groups (CMS data updated 2026-10-02).
- Regents of the University of California - UCSF80 clinicians in the group
- California Pacific Orthopaedics and Sports Medicine a Medical Corporat31 clinicians in the group
Specialties
Find other Physical Medicine and Rehabilitation doctors in California →
Other rehabilitation doctors in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Lake Erie College Of Osteopathic Medicine, Erie |
| Graduation year | 2009 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1073743233 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians